Puddling process

Hall (1) Also called the dry puddling process. An early ironmaking process, invented by J. Hall in 1830. 

The single-wafer puddle process, operating in an automatic continuous mode in a track system, is now the most commonly used method for resist development. It involves an initial dispense of the developer on each wafer, forming a puddle that covers the entire wafer surface for a period of time on the order of 30-75 seconds, following which the developer is rinsed off with deionized water. Additional... 

The puddling process is used to convert cast iron to wrought iron. During this process, C, S and other impurities are oxidized, leaving wrought iron with <0.2% C content. 

Puddling Process of purifying such impure metals as pig iron by stirring molten materials in an oxidizing environment. 

The Puddling Process - An English Threat to Swedish H emony... 

Figure 8.16 Furnace for the puddling process, place were separated by a wall (3). (Reprinted The decarburization occurred on the hearth in from A. Attman, Jernkontoret, Stockholm. With the reverberatory furnace (1) that was heated up permission.) by the flames from the fire (2). Hearth and fire-...

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